Merge pull request 'bugfix/15-docker-deployment' (#19) from bugfix/15-docker-deployment into main

Reviewed-on: #19

.gitea/workflows/release-docker.yaml

@@ -6,7 +6,7 @@ on:
 
 jobs:
   build-and-push:
-    runs-on: ubuntu-latest
+    runs-on: docker-builder
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
@@ -18,11 +18,10 @@ jobs:
         uses: actions/setup-buildx-action@v3
 
       - name: Log in to Gitea Container Registry
-        uses: docker/login-action@v3
-        with:
-          registry: git.miaurizius.de
-          username: ${{ gitea.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          echo "${{ secrets.REGISTRY_TOKEN }}" | docker login git.miaurizius.de \
+            --username "${{ secrets.REGISTRY_USER }}" \
+            --password-stdin
 
       - name: Build and push Docker image
         uses: docker/build-push-action@v6